package com.sky.mapper;

import com.sky.entity.ShoppingCart;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Update;

import java.util.List;

@Mapper
public interface ShoppingCartMapper {

    List<ShoppingCart> list(ShoppingCart shoppingCart);

    /**
     *更新购物车商品的数量
     * @param cart
     */
    @Update("update shopping_cart set number=#{number} where id=#{id}")
    void update(ShoppingCart cart);

    /**
     * 插入购物车信息
     * @param shoppingCart
     */
   @Insert("insert into shopping_cart(name, image, user_id, dish_id, setmeal_id, dish_flavor, number, amount, create_time) " +
           "values (#{name},#{image},#{userId},#{dishId},#{setmealId},#{dishFlavor},#{number},#{amount},#{createTime})")
    void insert(ShoppingCart shoppingCart);

    /**
     * 清空购物车
     * @param shoppingCart
     */
    @Delete("delete from shopping_cart where user_id=#{userId}")
    void clean(Long userId);

    /**
     * 在购物车里面减少商品
     * @param shoppingCarts
     */
    void subShopingCart(ShoppingCart shoppingCarts);
}
